problem: We have discussed three different color spaces: RGB, HSI and CMY(K). Specify the need for multiple color spaces. Why can we not use only one?

problem: A telescope in an observatory is used to produce images on a high-resolution CCD array. Assume the optics is flawed so that the images are blurry. Keeping in mind that only astronomical objects are viewed, describe two ways of correcting the blur.

problem: The magnitude spectrum of a continuous image is as given below.

a) Sketch the frequency response of the sampled spectrum if ωs =1.5 ωm along x and 3ωm along y directions in the figure below.

b) What is the minimum sampling rate along x and y to avoid aliasing?

c) Do you believe this is the most efficient sampling scheme? Why or why not? If you were to select a more efficient sampling scheme in what ways would it make the sampling more complicated?

problem: Given the following noisy image segment g(m, n):

Assume the noise is additive to and independent of the noiseless image f(m, n). The global image noise variance is 100. find out the adaptive Wiener filter output at pixels (2, 2) and (3, 3) using a 3x3 pixel neighborhood and uniform box filters. Discuss your findings.

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